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Questions tagged [curl]

cURL is an HTTP client library and command line tool.

646 questions
407
votes
15 answers

Displaying a remote SSL certificate details using CLI tools

In Chrome, clicking on the green HTTPS lock icon opens a window with the certificate details: When I tried the same with cURL, I got only some of the information: $ curl -vvI https://gnupg.org * Rebuilt URL to: https://gnupg.org/ * Hostname was NOT…
Adam Matan
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4 answers

How to test a HTTPS URL with a given IP address

Let's say a website is load-balanced between several servers. I want to run a command to test whether it's working, such as curl DOMAIN.TLD. So, to isolate each IP address, I specify the IP manually. But many websites may be hosted on the server, so…
Martin
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4 answers

Difference between `curl -I` and `curl -X HEAD`

I was watching the funny server type from http://www.reddit.com with curl -I http://www.reddit.com when I guessed that curl -X HEAD http://www.reddit.com would do the same. But, in fact, it doesn't. I'm curious about why. This is what I observe…
chmeee
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3 answers

Curl: disable certificate verification

I am developing and I need to access https://localhost. I know the certificate will not match. I just want curl to ignore that. Currently it gives me the following error message: curl: (51) SSL peer certificate or SSH remote key was not OK Is it…
blueFast
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54
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4 answers

Is there a built-in command-line tool under Windows like wget/curl?

I come from a Linux/Unix background and I have been wondering if Windows has a binary that can download files from the console. I would like to automate a certain process and one of my requirements it to not install much software, but use the…
carlspring
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51
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4 answers

How do I make cURL use keepalive from the command line?

I'm trying to verify that HTTP persistent connections are being used during communication with a Tomcat webserver I've got running. Currently, I can retrieve a resource on my server from a browser (e.g. Chrome) and verify using netstat that the…
Rob Hruska
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49
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7 answers

Default CA Cert Bundle Location

I need to add a .pem cert file to my default CA cert bundle but I don't know where the default CA Cert bundle is kept. I need to append my new .pem file to this default bundle. I'd rather do that than specify my own location using --capath cURL…
Slinky
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47
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7 answers

How to update cURL CA bundle on RedHat?

I am running into issues where the CA bundle that has been bundled with my version of cURL is outdated. curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate…
Andrew
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47
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1 answer

Curl POST - 411 Length Required

We have a RestFUL API we build in PHP. If we make the request: curl -u api-key:api-passphrase https://api.domain.com/v1/product -X POST We get back: 411 - Length Required Though if we simply add -d "" onto the request it works and no 411 error. Is…
Justin
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35
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2 answers

curl (56) Recv failure: Connection reset by peer - when hitting docker container

From an AWS ec2 instance (which runs docker), I am trying to curl my docker container-hosted web service. Given: [ec2-user]$ docker ps CONTAINER ID        IMAGE                                                                COMMAND                …
Kevin Meredith
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35
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8 answers

How is it possible that I can do a host lookup but not a curl?

Has anyone ever seen this before? Note that this happens not only with google.com, but with every domain I try. It's a wireless connection (WEP), but I'm not sure how that would be relevant: $ curl -v google.com # This takes about 60s to return *…
Daniel Quinn
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33
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2 answers

What does `* Mark bundle as not supporting multiuse` mean in my curl trace?

When I do a curl -v to some docker container that I created, I get: * Mark bundle as not supporting multiuse What does it mean? Where is it documented?
Martijn Burger
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32
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4 answers

How to troubleshoot connectivity when curl gets an *empty response*

I want to know how to proceed in troubleshooting why a curl request to a webserver doesn't work. I'm not looking for help that would be dependent upon my environment, I just want to know how to collect information about exactly what part of the…
chad
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30
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1 answer

Return only a HTTP status code from curl command

I want to just get a statusCode from CURL command response. When I use this command: curl -I http://uploadserver.ln/1.mp4 I want to just get 200 rather than this long result: HTTP/1.1 200 OK Server: nginx/1.14.0 (Ubuntu) Date: Sun, 01 Jul 2018…
soroush
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29
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1 answer

What does "tlsv1 alert unknown ca" mean?

I am trying to do a curl request using a client certificate like so: curl -E my.pem https://some.site And I get the following error message: curl: (35) error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca What does this mean? Is…
grasevski
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